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OpenAdvisories
Medium USN-7972-2 1 CVE

opencc vulnerability

Published May 26, 2026 · Updated May 26, 2026

Ecosystem: Ubuntu

Summary

USN-7972-1 fixed a vulnerability in OpenCC. This update provides the
corresponding update for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.

Original advisory details:

It was discovered that OpenCC incorrectly handled truncated UTF-8 input.
An attacker could possibly use this issue to cause OpenCC to crash,
resulting in a denial of service.

Fixed packages 2

ReleasePackageFixed in
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS opencc 1.0.4-5ubuntu0.1~esm1
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS opencc 1.0.5+git20190530-1ubuntu0.1~esm1

Vulnerabilities 1

  • Medium 5.3
    CVE-2025-15536

    BYVoid OpenCC MaxMatchSegmentation.cpp MaxMatchSegmentation heap-based overflow

    A weakness has been identified in BYVoid OpenCC up to 1.1.9. This vulnerability affects the function opencc::MaxMatchSegmentation of the file src/MaxMatchSegmentation.cpp. This manipulation causes heap-based buffer overflow. The attack is restricted to local …

    BYVoid OpenCC opencc opencc Debian Ubuntu Azure Linux Alpine npm

References

  • report
    https://ubuntu.com/security/CVE-2025-15536